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To find a rooms square feet you only need to multiply the 2 numbers and then divide by 25 for the number of sq ft per box. Keep in mind when buying tile you want to have 10% for waste. 9x22=198 198/25=7.92 You would need 8 boxes but 9 would be advisable if you haven't factored any waste into your measurements.

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15y ago

What else can I help you with?